{"instruction": "You are an expert in event argument extraction. Please extract event arguments and their roles from the input that conform to the schema definition, which already includes event trigger words. If an argument does not exist, return NAN or an empty dictionary. Please respond in the format of a JSON string.", "schema": [{"event_type": "ransom", "arguments": ["victim", "tool", "attacker", "time", "price", "payment method", "damage amount", "attack pattern", "place"]}], "input": "NBC affiliate WXIA reported that the city received a ransom demand in bitcoin for $ 6,800 per unit or $ 51,000 to unlock the entire system ."}
{"ransom": [{"victim": ["the city", "system"], "tool": "NAN", "attacker": "NAN", "time": "NAN", "price": ["$ 51,000", "$ 6,800"], "payment method": "in bitcoin", "damage amount": "NAN", "attack pattern": "NAN", "place": "NAN"}]}